Respectively snipped! Reading the first sentence of your post just prompted a thought: It seems the pair probably want the attention and media exposure, otherwise they wouldn't have torched the truck. It they didn't torch, their names wouldn't even be mentioned, it would've been a total mystery as to who was responsible.
Now I get they torched possibly to rid of evidence, but most of the evidence would be at crime scene more I'd think and if they weren't on the radar they could've ditched that truck anytime after somewhere dead quiet and went unnoticed. Torching that truck got their names on the radar pronto, I almost think on purpose now.